METHOD TO INCREASE NOISE IMMUNITY OF VEHICLES Russian patent published in 2017 - IPC H01P1/16 

FIELD: transportation.

SUBSTANCE: invention relates to vehicles, in particular, to special purpose vehicles, may be used to increase noise immunity of on-board electrical equipment to external high frequency electromagnetic field during vehicle operation under conditions of a complicated electromagnetic environment. Improvement of noise immunity of vehicle electrical equipment to external high frequency electromagnetic field is achieved by application of broadband radio absorbing material at least on three mutually perpendicular metal inner surfaces of that volume of the vehicle body, where the protected electrical equipment is located. Parameters of the broadband radio absorbing material are selected with account of EMF weakening at the specified minimum frequency of the frequency range, where at least 90% of electric equipment operation disturbances are observed under exposure of external high frequency EMF.

EFFECT: method makes it possible to change from standing wave mode to mixed wave mode, as a result of which the maximum levels of EMF are reduced in the inner volume of the vehicle body and electromagnetic environment is improved, and EMF impact at on-board electric equipment is lowered, thus its noise immunity increases.

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